.ul:before,.ul:after{
    content: '';
    display: block;
    clear: both;
}
.ul li{margin: 5px 0;position: relative;float: left;}
button{width: 100%;overflow: hidden;}


.con{margin-top: 70px;}
.effect{position: fixed;top: 0;left: 0;z-index: 100;}
.effect .tips{position: absolute;top: 10px;left: 0;right: 0;margin: auto;width: 500px;display: block;line-height: 50px;border: 1px #10ea67 solid;text-align: center;border-radius: 50px;}